数学建模求解（追加50分）
Problem B
Problem A South Sea Island Resort
A South Sea island chain has decided to transform one of their islands into a resort. This roughly circular island, about 5 kilometers across, contains a mountain that covers the entire island. The mountain is approximately conical, is about 1000 meters high at the center, appears to be sandy, and has little vegetation on it. It has been proposed to lease some fire-fighting ships and wash the mountain into the harbor. It is desired to accomplish this as quickly as possible.
Build a mathematical model for washing away the mountain. Use your model to respond to the questions below.
How should the stream of water be directed at the mountain, as a function of time
How long will it take using a single fire-fighting ship
Could the use of 2 (or 3, 4, etc.) fire-fighting ships decrease the time by more than a factor of 2 (or 3, 4, etc.)
Make a recommendation to the resort committee about what do.
写一篇文章，或者至少一段，或者提供算法或思路。中英文皆可。
多多益善。
PS：垃圾回答不要，我宁可关闭问题，也不会给分的。
参考答案:还是我来翻译一下吧！
问题 B
一个南海海岛的旅游地开发
海岛开发委员会已经决定把他们的一个岛开发成一个渡假胜地。 这个岛呈圆形,直径5公里,岛上有一座覆盖整个的岛的一座山。山为锥形,高1000米,为沙质地,几乎没有植被。有人提议租用一些消防船将山冲入海港，时间越短越好。
建立一个冲洗山的模型，用你的模型解决下列问题：
1。应该以什么角度冲洗这座山，给出一个与时间有关的函数。
2。1艘消防船何时能够完成任务？
3。若使用2艘消防船(或 3艘,4艘, 等等)，所需时间是否可以变成1/2（或1/3，1/4，等等）
4。给委员会提出如何实施的建议。